package com.hx.haowumall.haowumallseckill.scheduled;

import com.hx.haowumall.haowumallseckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架
 *      提前预告功能（上架三天要秒杀的商品）
 *      秒杀开始时间 00：00：00 - 23：59：59
 * */
@Slf4j
@Service
public class SeckillSkuScheduled {

    @Autowired
    SeckillService seckillService;

    @Autowired
    RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    //TODO 上架功能为幂等性操作
    @Scheduled(cron = "*/5 * * * * ?")
    public void uploadSeckillSkuLatest3Days(){
        //1、重复上架无需处理
//        log.info("上架秒杀的商品信息；");
        //分布式锁 锁的业务状态执行完成，状态更新完成。锁释放后，其他人获取到的是最新状态
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);

        try {
            seckillService.uploadSeckillSkuLatest3Days();
        } finally {
            lock.unlock();
        }

    }
}
